Use a mixture of reagent and solvent for one-step derivatization with Thermo Scientific™ Tri-Sil BP (BSA:Pyridine) Reagent. Consisting of BSA and high purity pyridine, this formulation of a silylation reagent derivatizes alcohols, phenols, organic acids, aromatic amides and amides for GC analysis. This reagent is excellent for unhindered steroids.